WEAR RESISTANT PISTON RING COATING

摘要

A method of manufacturing a coated piston ring includes applying a layer of an aluminum-based material to an outside surface of a ring body formed of an iron-based material, such as steel. The layer of an aluminum-based material is applied by thermal spraying. The method further includes an environmentally friendly heat treatment process causing the aluminum-based material to combine with the iron-based material of the ring body and form a wear resistant coating of aluminum iron (Al5Fe2). The heat treatment process can include heating to a temperature of about 550° C. for 20 minutes so that the wear resistant coating achieves a hardness of HV 1000.

主权项

1. A piston ring, comprising:
a ring body including an iron-based material extending circumferentially around a center axis; and a wear resistant coating disposed on said ring body and presenting an outer diameter surface of said piston ring, and said wear resistant coating including aluminum iron (Al5Fe2).